Did you know that 92% of the people in the world don't have access to clean air? And 6.5 million people die every year because of air pollution! That's more deaths than HIV/AIDS, tuberculosis and traffic accidents combined.
This simple Twitter app tweets beautifully-designed dynamic images every 15 minutes comparing New Delhi's real-time air quality with that of the following cities:
- London,
- New York City,
- Sydney, and
- Beijing.
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